{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"domainaware/parsedmarc","product":"parsedmarc","source":"CNA: VulnCheck","vendor":"domainaware","versions":[{"lessThan":"11.0.1","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-82520","cwes":["CWE-409"],"description":"parsedmarc before 11.0.1 decompresses gzip and ZIP attachments in a single unbounded read with no limit on decompressed output size. Because parsedmarc automatically processes incoming DMARC report emails without user interaction, an unauthenticated remote attacker can send a crafted email with a highly compressed attachment to the monitored mailbox, causing the parsedmarc process to allocate memory proportional to the uncompressed size and exhaust available RAM.","epss":{"date":"2026-11-08","percentile":0.56305,"score":0.00784},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r"}],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794146949999,"publishedAt":1788467940723,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r"},{"source":"CNA: VulnCheck","tags":["release-notes","patch"],"url":"https://github.com/domainaware/parsedmarc/releases/tag/11.0.1"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/parsedmarc-zip-bomb-dos-via-compressed-email-attachments"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/domainaware/parsedmarc/security/advisories/GHSA-43qf-f35w-2x4r"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/domainaware/parsedmarc/releases/tag/11.0.1"}],"revision":"a3e15216b9aa4fcc87baf4b8123cb09d620823fd127eaa558dea6e8134ff5896","sources":[{"modifiedAt":1794146949999,"name":"CNA: VulnCheck","retrievedAt":1794151386503,"url":"https://www.cve.org/CVERecord?id=CVE-2026-82520"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794151398399,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-82520"}],"ssvc":{"assessedAt":1788546953708,"automatable":"yes","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"parsedmarc < 11.0.1 Zip Bomb DoS via Compressed Email Attachments","updatedAt":1794151398399}